Illinois recorded 334 providers in the latest CMS NPI registry weekly update, representing 3% of the national weekly total. The update includes 149 new providers this week, bringing the year-to-date count to 175. Individual providers account for 259 records and organizations for 75. Illinois’ concentration makes it one of the more active state markets in this update, signaling substantial behavioral health infrastructure and continued provider enrollment. NPI activity does not confirm active caseloads, staffing levels or appointment availability.

ABA Workforce Mix

The registry reports 20 BCBA credentials and 52 RBT credentials, along with one dual BCBA-RBT credential. These categories overlap: the dual credential can be represented in both counts, and taxonomy and credential fields may describe the same provider. They should not be treated as mutually exclusive shares of the 334-provider total. The RBT-to-BCBA imbalance points to a technician-heavy ABA workforce, with fewer documented supervisors available to oversee treatment plans, clinical quality and day-to-day technician services. One record also carries BCABA credentials, while another lists BCBA, LBA credentials, illustrating how state licensure and behavior-analytic classifications can appear in different registry fields.

Demographics and Organizations

Gender data identifies 212 female providers, 43 male providers and 4 nonbinary providers, corresponding to 82%, 17% and 2%. The counts and percentages do not account for every provider record, indicating that gender was not assigned for some records. Chicago, Waukegan, Evanston, Aurora and Bloomington are the leading listed cities. County of Lake appears 13 times, while Infant Welfare Society of Chicago appears twice. The registry also reports 66 providers with multiple taxonomies, another overlap that does not represent 66 additional providers.

Illinois’ update suggests expanding, technician-led ABA capacity, but sustained access will depend on adding enough BCBA-level supervision across its urban and regional markets.